Answer:
6.75×10³⁰ N.
Explanation:
Applying Newron's Law of universal gravitation.
From the question,
F = Gm₁m₂/r²................................................................. Equation 1
Where F = Gravitational force between the sun and Neptune, m₁ = mass of Neptune, m₂ = mass of the sun, r = distance bewteen the sun and Neptune, G = gravitational constant.
Given: m₁ = 1.99×10⁴⁰ kg, m₂ = 1.03×10²⁶ kg, r = 4.50×10¹² m
Constant: G = 6.67×10⁻¹¹ Nm²kg⁻².
Substitute these values into equation 1
F = [(6.67×10⁻¹¹)( 1.99×10⁴⁰)(1.03×10²⁶)]/(4.50×10¹²)²
F = (13.67×10⁴⁰⁺²⁶⁻¹¹)/(20.25×10²⁴)
F = (13.67×10⁵⁵)/(20.25×10²⁴)
F = 0.675×10⁵⁵⁻²⁴
F = 0.675×10³¹
F = 6.75×10³⁰ N.
